I would like to open the community competitive server, but when I run this mode, I have 10 slots (in the startup parameters i set "-maxplayers_overide 20"), the colors of players (like on official competitive servers). When I edit gamemode_competitive_server.cfg I can change the number of rounds, etc. it works. I'm just asking how to change the number of slots and remove player colors on the minimap.

I would add that I am going to host a server myself, I won't use any hosting services. (i guess that it's not important)